<template>
    <div class="goodsinfo-container" >
        <!--小球-->
       <transition
            @before-enter="beforeEnter"
            @enter="enter"
             @after-enter="afterEnter">
           <div class="ball" v-show="ballFlag" ref="ball"></div>
       </transition>
        <!--轮播图-->
        <div class="mui-card">
            <swipe :lunbotulist="lunbotu" :isfull="false"></swipe>
        </div>

        <!--商品详情-->
        <div class="mui-card">
            <div class="mui-card-header">{{goodsinfo.title}}</div>
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                    <p class="price">市场价：
                        <del>￥{{goodsinfo.market_price}}</del> &nbsp;&nbsp; 销售价：<span class="now-price">￥{{goodsinfo.sell_price}}99</span></p>
                    <p>购买数量
                        <numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox>
                    </p>
                    <p>
                        <mt-button type="primary" size="small">立即购买</mt-button>
                        <mt-button type="danger" size="small" @click="addToShopCar" >加入购物车</mt-button>
                    </p>
                </div>
            </div>
        </div>

        <!--商品参数-->
        <div class="mui-card">
            <div class="mui-card-header">商品参数</div>
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                   <p>商品货号:{{goodsinfo.goods_no}}</p>
                   <p>库存情况:{{goodsinfo.stock_quantity}}件</p>
                   <p>上架时间：{{goodsinfo.add_time|dateFormat}}</p>
                </div>
            </div>
            <div class="mui-card-footer">
                <mt-button class="bottom" type="primary" size="large" plain @click="gogoodsdesc(id)">商品详情</mt-button>
                <mt-button type="danger" size="large" plain @click="gogoodscomment(id)">商品评论</mt-button>
            </div>
        </div>
    </div>
</template>

<script>
    import {Toast} from 'mint-ui';
    // 导入轮播图组件
    import swipe from '../subcomponent/swipe.vue'
    // 导入 数字选择框组件
    import numbox from '../subcomponent/goodsinfo_numbox.vue'
    export default {
        data() {
            return {
                id: this.$route.params.id,
                lunbotu: [],//轮播图图片
                goodsinfo : {},//商品详情信息
                ballFlag:false ,//隐藏小球
                selectdCount:1
            }
        },
        created() {
            this.getlunbotu();
            this.getgoodsinfo();
        },
        methods: {
            // 获取轮播图
            getlunbotu() {
                this.$http.get("api/getthumimages/" + this.id).then(result => {
                    if (result.body.status === 0) {
                        result.body.message.forEach(item => {
                            item.img = item.src;
                        });
                        this.lunbotu = result.body.message
                    } else {
                        Toast("图片获取失败")
                    }
                })
            },
            // 获取商品信息
            getgoodsinfo(){
                this.$http.get("api/goods/getinfo/"+this.id).then(result => {
                    if(result.body.status === 0){
                        this.goodsinfo = result.body.message[0]
                    }
                })
            },
            // 跳转到商品详情页面
            gogoodsdesc(id){
                this.$router.push({name:"goodsdesc", params:{id}})
            },
            // 跳转到评论页面
            gogoodscomment(id){
                this.$router.push({name:"goodscomment", params:{id}})
            },
            addToShopCar(){
                this.ballFlag = !this.ballFlag;
                var goodsinfo = {
                    id:this.id,
                    count:this.selectdCount,
                    price: this.goodsinfo.sell_price,
                    selected:true
                };
                //调用store帐的mutation 来将商品加入购物车
                this.$store.commit('addtocar',goodsinfo)

            },
            beforeEnter(el){
               el.style.transform='translate(0,0)'
            },
            enter(el,done){
                el.offsetWidth;
                //
                // const ballPosition = this.$refs.ball.getBoundingClientRect();
                // const badgePosition = document.getElementById("badge").getBoundingClientRect();
                // const xDist = badgePosition.left - ballPosition.left;
                // const yDist = badgePosition.top - ballPosition.top;

                // 获取小球的 在页面中的位置
                const ballPosition = this.$refs.ball.getBoundingClientRect();
                // 获取 徽标 在页面中的位置
                const badgePosition = document
                    .getElementById("badge")
                    .getBoundingClientRect();

                const xDist = badgePosition.left - ballPosition.left;
                const yDist = badgePosition.top - ballPosition.top;

                el.style.transform = `translate(${xDist}px, ${yDist}px)`;
                // el.style.transform='translate(100px,100px)';
                el.style.transition='all 0.6s cubic-bezier(.4,-0.3,1,.68)';
                done();
            },
            afterEnter(el){
                this.ballFlag = !this.ballFlag;
            },
            getSelectedCount(counts){
                this.selectdCount = counts;
            }


        },
        components: {
            swipe,
            numbox
        }
    }
</script>

<style lang="scss" scoped>
    .goodsinfo-container{

        .now-price {
            font-weight: bold;
            font-size: 16px;
            color: red;

        }
        .mui-card-footer {
            display: block;
            .bottom{
                margin-bottom: 15px;
            }
        }
        .ball {
            width: 15px;
            height: 15px;
            background-color: red;
            position: absolute;
            z-index: 99;
            top: 379px;
            left: 139px;
            border-radius: 50%;
        }
    }

</style>